(2c-5)(c-6)+(c+6)(3c-2)=

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Solution for (2c-5)(c-6)+(c+6)(3c-2)= equation:


Simplifying
(2c + -5)(c + -6) + (c + 6)(3c + -2) = 0

Reorder the terms:
(-5 + 2c)(c + -6) + (c + 6)(3c + -2) = 0

Reorder the terms:
(-5 + 2c)(-6 + c) + (c + 6)(3c + -2) = 0

Multiply (-5 + 2c) * (-6 + c)
(-5(-6 + c) + 2c * (-6 + c)) + (c + 6)(3c + -2) = 0
((-6 * -5 + c * -5) + 2c * (-6 + c)) + (c + 6)(3c + -2) = 0
((30 + -5c) + 2c * (-6 + c)) + (c + 6)(3c + -2) = 0
(30 + -5c + (-6 * 2c + c * 2c)) + (c + 6)(3c + -2) = 0
(30 + -5c + (-12c + 2c2)) + (c + 6)(3c + -2) = 0

Combine like terms: -5c + -12c = -17c
(30 + -17c + 2c2) + (c + 6)(3c + -2) = 0

Reorder the terms:
30 + -17c + 2c2 + (6 + c)(3c + -2) = 0

Reorder the terms:
30 + -17c + 2c2 + (6 + c)(-2 + 3c) = 0

Multiply (6 + c) * (-2 + 3c)
30 + -17c + 2c2 + (6(-2 + 3c) + c(-2 + 3c)) = 0
30 + -17c + 2c2 + ((-2 * 6 + 3c * 6) + c(-2 + 3c)) = 0
30 + -17c + 2c2 + ((-12 + 18c) + c(-2 + 3c)) = 0
30 + -17c + 2c2 + (-12 + 18c + (-2 * c + 3c * c)) = 0
30 + -17c + 2c2 + (-12 + 18c + (-2c + 3c2)) = 0

Combine like terms: 18c + -2c = 16c
30 + -17c + 2c2 + (-12 + 16c + 3c2) = 0

Reorder the terms:
30 + -12 + -17c + 16c + 2c2 + 3c2 = 0

Combine like terms: 30 + -12 = 18
18 + -17c + 16c + 2c2 + 3c2 = 0

Combine like terms: -17c + 16c = -1c
18 + -1c + 2c2 + 3c2 = 0

Combine like terms: 2c2 + 3c2 = 5c2
18 + -1c + 5c2 = 0

Solving
18 + -1c + 5c2 = 0

Solving for variable 'c'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
3.6 + -0.2c + c2 = 0

Move the constant term to the right:

Add '-3.6' to each side of the equation.
3.6 + -0.2c + -3.6 + c2 = 0 + -3.6

Reorder the terms:
3.6 + -3.6 + -0.2c + c2 = 0 + -3.6

Combine like terms: 3.6 + -3.6 = 0.0
0.0 + -0.2c + c2 = 0 + -3.6
-0.2c + c2 = 0 + -3.6

Combine like terms: 0 + -3.6 = -3.6
-0.2c + c2 = -3.6

The c term is -0.2c.  Take half its coefficient (-0.1).
Square it (0.01) and add it to both sides.

Add '0.01' to each side of the equation.
-0.2c + 0.01 + c2 = -3.6 + 0.01

Reorder the terms:
0.01 + -0.2c + c2 = -3.6 + 0.01

Combine like terms: -3.6 + 0.01 = -3.59
0.01 + -0.2c + c2 = -3.59

Factor a perfect square on the left side:
(c + -0.1)(c + -0.1) = -3.59

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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